Flush Casement Windows

G16 Award Winner

To give your customer's the best window profile possible, at Emplas we work with Profile 22 and use the Optima system. This system mimics the appearance of traditional timber windows but offers the benefits associated with uPVC, such as superb energy efficiency and lower heating bills. This window is the best on the market, far surpassing others in terms of authentic design and energy efficiency. Available in bevelled or sculptured options, your customers can choose the perfect window for their home.

Traditional Look

These windows will add some 19th-century character to any home they are installed in and provide 21st-century benefits such as low maintenance, thermal efficiency, security. weatherproofing & more.

Low Maintenance

This window won't be blighted by the issues that affected timber. Warping, cracking, bowing & twisting will be problems of the past. All these windows need is an occasional wipe with a damp cloth.

Reinforced Profile

The multi-chamber profile allows for a reinforced window. Recycled thermal inserts, aluminium &/or steel can be used. Additional multi-point locks ensure high-security across the frame.

Reducing Energy Bills

The multi-chamber system achieves a WER A+ rating and can achieve U-values as low as 0.9 W/m2K using 24mm insulating glass units.


Controllable or permanent ventilators can be added into the head of the frame if required. This allows for a cooler property in the summer.

Foils & Colour

The flush casement window is available in a variety of colours & woodgrain foils, with 15-in stock colours available, suiting the decor & style of every property.

Colour Options

Glass Options

white cream2 agate-grey basalt-grey anthracite-grey brilliant-blue steel-blue chartwell-green dark-green dark-red natural-oak light-oak english-oak mahogany rosewood
autumn chantilly charcoal-stick cortona cotswold digital evergalde flemish florielle mayflower flush-minister oak pelerine stippolyte sycamore taffetta warwick

Flush Casement Window FAQ's

Here are some answers to the frequently asked questions we receive regarding our Flush Casement Windows.

1 - Can The Thermal Efficiency Be Improved?

Yes, it can be! The U-Values listed are for a double glazing pane. The flush sash windows are available in glazing options up to 44mm (triple glazing), improving the thermal efficiency of any property further.

2 - Will I Be Affected by Cold Draughts?

No, cold draughts and damp will be problems of the past with the Profile 22 Flush Casement Windows.

3 - Is it High-Maintenance Like Timber?

No, this window is not high-maintenance. Despite looking like a traditional timber window, the flush casement window is made from a uPVC profile. This means you'll enjoy a low-maintenance product that won't warp, bow, crack, twist or flake like a timber window.

What Is a Flush Casement Window?

If you’re a homeowner wondering what a Flush casement window is, we’ve got you sorted! Flush Casement windows are the perfect alternative for old timber or steel designs. The reason it is called a flush window is the window closes flush into the outer frame, sitting in line with the face of the window. This means there is no visible lip when looking at the window from outside of the property. 

Flush Casement windows are becoming increasingly popular in UK properties. As well as adding an aesthetically pleasing look, these windows add character and charm. With woodgrain options available, you can truly get the wooden look of a window without the same issues. 

Flush Sash Windows

uPVC Flush Casement Window Benefits

Easy Clean Fire Egress Hinges

Lipped slider for enhanced smooth operation. Easy friction adjustment without metal to metal contact. Restricted hinge options available to protect the most vulnerable.

Stainless Steel Friction Stays
Stainless Steel Friction Stays

Available in ferritic 430 or austenitic 304 stainless steel for enhanced corrosion resistance. Durable and weather resistant, tested to 30,000 open cycles.

Customisable Handle Options
Customisable Handle Options

Guaranteed for 10 years, available in various colours to complement any window style. Our austenitic 304 stainless steel ergonomic handles are rust resistant.

Multi-Point Locking Systems
Multi-Point Locking Systems

Maximum security multi-point locking systems provide enhanced protection against forced entry. Additional dog bolts improve stability around the entire frame and prevent attack on the hinge side of the window.

Trickle Vents
Trickle Vents

Available in uPVC and aluminium, in a range of colours to match any frame (vent in frame head only for flush casement). Provided loose to prevent damage in transit. Complies with latest building regulations.

Accredited Weather Performance
Accredited Weather Performance

Superior weather sealing and draught proofing performance, conforming to the exacting standards of the BS-36751 accreditation.

Docking System Bolt
Docking System Bolt

Patented bolt into the keep docking system prevents sideways movement of the bolt when under attack.

Shootbolt Locks
Superior Shoot Bolt

Heavy duty bolt has up to 300 per cent greater contact area against competitor shoot bolts.

Durable Hardware
Durable Hardware

Resistant to salt and spray (BSEN1670) and cycle tested over 50,000 times for ultimate long term performance.

uPVC Flush Casement Window Handle Options

White Window Handle
Satin Window Handle
Chrome Window Handle
Gold Window Handle
Black Window Handle

Flush fitting push button


Key locking

Push to Release

Locking mechanisms


Sculptured cranked handle available in both left hand and right hand variants

Corrosion Resistant

Tested to BSEN1690 grade 5 salt and ammonia attack

Colour Coded

Push button and screw
cover cap

Flush Casement Windows Video

View how our windows are manufactured in this video. As an Emplas approved installer, you'll be able to use customised versions of these videos and more on your own site.

Flush Casement Windows Brochure

By becoming an Emplas approved installer, you have access to our range of brochures which includes the “Complete Collection” highlighting the features and benefits of our Optima Window range.


70mm Framing System


Optional Sash Central Seal


5 Chamber Sash


10mm Cover on Weatherseals


U-values of 0.9W/m2K WERS


Chamfered or Sculptured Design


6 Chamber Outer Frame


Multiple Foil and Colour Options


Optional Outer Frame Centre Seal


Triple Glazing Panes Up To 44mm


Optional RCM Thermal Inserts


SAC Multi-Point Locking System

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